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Physical Chemistry
Mention the conditions for Qp = Qv of a gas phase reaction.
Physical Chemistry
Justify - H*(CO2) = Delta_f H*(CO2) [*means zero in superscript and _f means f in subscript]
where, H* is standard enthalpy and Delta_f H* means standard enthalpy change of formation.
where, H* is standard enthalpy and Delta_f H* means standard enthalpy change of formation.
Physical Chemistry
What is the mass percent of hydrogen in water?
Atomic weights: H= 1, O= 16
a) 33.3%
b) 5.5%
c) 11.1%
d) 20.0%
Atomic weights: H= 1, O= 16
a) 33.3%
b) 5.5%
c) 11.1%
d) 20.0%
Physical Chemistry
2 NOBr <-----> 2NO + Br2
The equlibrium constant for the above reaction is 2x10^3 and the change in H is -56 kJ at 25 degrees celsius. Which of the following changes would cause this equlibrium to shift to the left?
a) addition of NOBr
b) addition of Br2
c) addition of a catalyst
d) removal of NO
The equlibrium constant for the above reaction is 2x10^3 and the change in H is -56 kJ at 25 degrees celsius. Which of the following changes would cause this equlibrium to shift to the left?
a) addition of NOBr
b) addition of Br2
c) addition of a catalyst
d) removal of NO
Physical Chemistry
C3H8 + 5O2 ----> 3CO2 +4 H2O
If 5 L of C3H8 reacts, what volume of CO2 could be produced?
a) 5/3 L
b) 1 L
c) 15 L
d) 45 L
If 5 L of C3H8 reacts, what volume of CO2 could be produced?
a) 5/3 L
b) 1 L
c) 15 L
d) 45 L
Physical Chemistry
ten moles of an ideal gas expands isothermally and reversibly from a volume of two litre to ten litres at 300k
calculate
1. delta H
2. delta U
3. q
4. w
5. delta S gas
6 delta S surroundings
calculate
1. delta H
2. delta U
3. q
4. w
5. delta S gas
6 delta S surroundings
Physical Chemistry
if the fuel consumption of a car, traveling at steady 60 mph, is 20 mpg what is the power produced by the petrol being burnt in the engine? Assume that the density of petrol is 0.84kg/l and the heat of combustion of petrol is 47 302kj/kg
Physical Chemistry
if the osmotic pressure of 0.1M aq.solution urea at certain temperature is p,that of 0.2M aq.solution
of NaCl at the same temperature
of NaCl at the same temperature
Physical Chemistry
4Al + 3O2 ---> 2 Al2O3
If 0.54 mole of Al reacts with 0.54 mole of O2, as above, how many moles of Al2O3 could form?
a) 0.27 mole
b) 0.36 mole
c) 0.81 mole
d) 1.08 mole
If 0.54 mole of Al reacts with 0.54 mole of O2, as above, how many moles of Al2O3 could form?
a) 0.27 mole
b) 0.36 mole
c) 0.81 mole
d) 1.08 mole
Physical Chemistry
If 30 mL of an H2SO4 solution is neutralized by 60 mL of 1 M NaOH solution, then what is the molarity of the H2SO4?
a)0.5 M
b) 1 M
c) 1.5 M
d) 2 M
a)0.5 M
b) 1 M
c) 1.5 M
d) 2 M
